US20030197683A1 - Device and method for power saving of wireless mouse - Google Patents
Device and method for power saving of wireless mouse Download PDFInfo
- Publication number
- US20030197683A1 US20030197683A1 US10/309,077 US30907703A US2003197683A1 US 20030197683 A1 US20030197683 A1 US 20030197683A1 US 30907703 A US30907703 A US 30907703A US 2003197683 A1 US2003197683 A1 US 2003197683A1
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- United States
- Prior art keywords
- mouse
- switch
- wireless mouse
- controller
- housing
- Prior art date
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3259—Power saving in cursor control device, e.g. mouse, joystick, trackball
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Definitions
- the present invention relates to an improved power saving method of a wireless mouse, and more particularly, to a power saving method of a wireless mouse in the sleeping mode.
- Distinctive connection methods can be used to connect a personal computer and the peripherals.
- the wire connections between the personal computer and the peripherals may limit the relative disposition locations of the peripherals to the personal computer.
- Some peripherals e.g. wireless mice, are coupled to a personal computer with wireless connections to provide convenience.
- a wireless mouse needs batteries to provide power, and battery's life cycle is limited. Accordingly, the user needs to concern about the power consumption of the wireless mouse.
- a conventional wireless mouse since a user does not operate the wireless mouse all the times, one conventional way to save battery power is to force the wireless mouse entering the sleeping mode while not operating.
- a conventional wireless mouse usually implements the operation mode, idle mode, and sleeping mode.
- the operation mode has largest power consumption while the sleeping mode has lowest power consumption.
- Power consumption of the idle mode is between those of the operation mode and the sleeping mode.
- a controller in a wireless mouse has to detect actions of mouse and buttons over the mouse in additional to control over the wireless communication module.
- the power consumption of the operation mode is 14 mA.
- the controller turns off the wireless communication module in the idle mode, but still detects actions of mouse and buttons to return to the operation mode.
- the power consumption of the idle mode is 5-7 mA.
- the power consumption is 60-120 ⁇ A.
- the controller not only turns off the wireless communication module but also does not detect actions of mouse and buttons.
- the power consumption of the idle mode is 60-110 ⁇ A.
- buttons are activated, the wireless mouse returns to the operation mode from either idle or sleeping modes. The simple holding of the mouse does not render the wireless mouse entering into the operation mode.
- a conventional wireless mouse is in the operation mode in step 104 .
- the controller in the wireless mouse detects if it is not operated for 1 second. If it is “NO” in step 106 , the wireless mouse enters into the idle mode in step 108 .
- the controller checks, in step 110 , if the activation of the wireless mouse is made within 5 seconds while in the idle mode. When it is not operated in step 110 , the wireless mouse enters into the sleeping mode in step 112 . Afterwards, in step 114 , the controller checks user actions of the wireless mouse for 600 seconds.
- the conventional method proceeds to FIG. 1B when the wireless mouse is not operated in step 114 .
- the wireless mouse enters into the deep sleeping mode in step 118 when it is “NO” in step 114 .
- the wireless mouse has not been not used for 10 minutes, e.g. in midnight or weekend when the wireless mouse has not been used for a long period of time.
- the wireless mouse does not respond to the user operations.
- the controller counts 680 ms, and then the wireless mouse enters into the idle mode in step 122 .
- the wireless mouse checks users operations for 320 ms. The wireless mouse returns to the operation mode in step 104 if it is “YES” in step 124 , or returns to the deep sleeping mode in step 118 if it is “NO” in step 124 .
- the conventional power saving method performs a loop consuming 1 second while the wireless mouse has not been used for a long period of time.
- the wireless mouse is in the deep sleeping mode for 680 ms to reduce power consumption and in the idle mode for 320 ms to detect mouse operations.
- the drawback for the conventional approach is that, when the wireless mouse is in the deep sleeping mode, the controller does not detect mouse operations until it enters into the idle mode. Furthermore, entering into the idle mode regularly consumes more power than the deep sleeping mode.
- An aspect of the present invention is to provide a power saving method for a wireless mouse and a mouse with a power saving device.
- the present invention discloses a power saving device of a wireless mouse.
- the wireless mouse has a switch. When the wireless mouse is not in used for a period of time, an interrupt is actuated enabling the wireless mouse to enter into the sleep mode. When a user touches the mouse and actuates the switch, the interrupt is disabled and the wireless mouse returns to the operation mode.
- There are two methods to actuate the switch One method is that a key extends out of the housing via an opening, and the switch is actuated when the key is depressed. The other is a cover disposed on the housing, and the switch is actuated when the cover is depressed
- FIG. 1A and FIG. 1B are flow diagrams showing a conventional power saving method of a wireless mouse.
- FIG. 2A and FIG. 2B are flow diagrams showing a power saving method of a wireless mouse in accordance an exemplary embodiment of the present invention.
- FIG. 3A is a wireless mouse in accordance with an exemplary embodiment of the present invention.
- FIG. 3B is a cross-sectional diagram of a wireless mouse in FIG. 3A.
- FIG. 3C is an explosive view of a wireless mouse in FIG. 3A.
- FIG. 4A is a wireless mouse in accordance with another exemplary embodiment of the present invention.
- FIG. 4B is a cross-sectional diagram of a wireless mouse in FIG. 4A.
- FIG. 4C is an explosive view of a wireless mouse in FIG. 4A.
- the present invention provides a power saving device for a wireless mouse.
- a wireless mouse consumes less power and, at the same time, is still sensitive to user operations while the wireless mouse is in the sleeping mode.
- the wireless mouse is in the operation mode of step 204 .
- the wireless mouse When the wireless mouse is not activated for a period of time T1 in step 206 , the mouse enters into idle mode in step 208 . If the activation interval does not exceed T1, the wireless mouse stays in the operation mode in step 204 .
- a controller checks the wireless mouse in step 210 . The wireless mouse returns to an operation mode in step 204 when it is operated in step 210 . If it is “NO” in step 210 , then step 212 is proceeded and an interrupt is enabled.
- the wireless mouse After the interrupt is enabled, the wireless mouse enters into the sleeping mode in step 216 .
- the wireless mouse returns to the operation mode in step 204 . If the user does not utilize the wireless mouse in step 218 , it stays in the sleeping mode in step 216 .
- the length of T1 and T2 may be configured by the power saving method. For example, T1 may be 1 second and T2 may be 5 seconds. T1 maybe 2 seconds and T2 may be 10 seconds.
- the wireless mouse enters into the sleeping mode entirely and consumes lowest power.
- the wireless mouse does not return to the operation mode until the interrupt is disabled. Therefore, the power saving method of the present invention can save more power than that in prior art.
- the present invention provides two exemplary embodiments of power saving device for achieving objects of the invention.
- the power saving device includes a switch coupling to the controller on a print circuit board in the wireless mouse.
- the switch may be an electronic switch or a leaf spring.
- the wireless mouse When the wireless mouse is not in use for a period of time, it enters into the sleeping mode.
- the switch When the user utilizes the wireless mouse, the switch is actuated to disable the interrupt, and the wireless mouse returns to the operation mode.
- wireless mouse 300 is an exemplary embodiment of the present invention.
- Wireless mouse 300 includes housing 304 , wheel 330 , and buttons 308 , 310 .
- the number of buttons 308 , 310 and wheel 330 depends on the wireless mouse design and is not restricted by the appearance in FIG. 3A.
- Cover 302 is disposed on housing 304 .
- FIG. 3B is a cross-sectional diagram of wireless mouse 300 .
- Cover 302 is coupled to switch 312 , and print circuit board 328 is disposed under switch 312 .
- switch 312 When a user touches cover 302 , cover 302 is depressed to actuate switch 312 . Consequently, the interrupt is disabled and wireless mouse 300 returns to the operation mode.
- FIG. 3C is an explosive view of wireless mouse 300 .
- Housing 304 includes a plurality of holes 332 .
- Cover 302 is coupled to switch 312 by passing through hole 332 .
- Cover 302 returns to an undepressed position by resilience of switch 312 or by resilient units, such as springs 314 , 316 .
- Springs 314 and 316 contact to cover 302 via holes 332 .
- Cover 302 has positioning shafts 318 , which corresponds to positioning holes 320 located on housing 304 . When cover 302 and housing 304 are assembled together, the positioning shafts 318 are inserted into corresponding positioning holes 320 , such that cover 302 moves between depressed and undepressed positions. Cover 302 is undepressed while the wireless mouse is not in use and in the sleeping mode.
- wireless mouse While cover 302 is depressed, wireless mouse disables the interrupt and returns to the operation mode. The operation mode is not disturbed by the interrupt. The interrupt is actuated only if wireless mouse 300 is not operated by a user for a period of time and enters into the sleeping mode.
- FIG. 4A is another exemplary embodiment of the present invention.
- Components in wireless mouse 400 are similar to those in wireless mouse 300 .
- the major difference is key 412 replacing cover 302 .
- the shape and position of key 412 varies according to the mouse design.
- Key 412 may be disposed on an upper side of housing 402 for operation convenience.
- FIG. 4B is a cross-sectional diagram of wireless mouse 400 .
- Key 412 is coupled to switch 414 , and print circuit board 424 is disposed under switch 414 .
- switch 414 When a user touches key 412 , key 412 is depressed to actuated switch 414 . Consequently, the interrupt is disabled and wireless mouse 400 returns to the operation mode.
- FIG. 4C is an explosive view of wireless mouse 400 .
- Key 412 returns to an undepressed position by resilience of switch 414 or by a resilient unit, such as spring 416 .
- Key 412 is undepressed while the wireless mouse is not in use and in the sleeping mode.
- wireless mouse 400 disables the interrupt and returns to the operation mode. The operation mode is not disturbed by the interrupt.
- the interrupt is actuated only if wireless mouse 400 is not operated by a user for a period of time and enters into the sleeping mode.
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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
Abstract
Description
- This application claims priority of Taiwan Patent Application Serial No. 91107833 entitled “Device and Method for Power Saving of Wireless Mouse”, filed on Apr. 17, 2002.
- The present invention relates to an improved power saving method of a wireless mouse, and more particularly, to a power saving method of a wireless mouse in the sleeping mode.
- Distinctive connection methods, such as wire or wireless connections, can be used to connect a personal computer and the peripherals. The wire connections between the personal computer and the peripherals may limit the relative disposition locations of the peripherals to the personal computer. Some peripherals, e.g. wireless mice, are coupled to a personal computer with wireless connections to provide convenience. A wireless mouse needs batteries to provide power, and battery's life cycle is limited. Accordingly, the user needs to concern about the power consumption of the wireless mouse.
- Since a user does not operate the wireless mouse all the times, one conventional way to save battery power is to force the wireless mouse entering the sleeping mode while not operating. A conventional wireless mouse usually implements the operation mode, idle mode, and sleeping mode. The operation mode has largest power consumption while the sleeping mode has lowest power consumption. Power consumption of the idle mode is between those of the operation mode and the sleeping mode.
- In the operation mode, a controller in a wireless mouse has to detect actions of mouse and buttons over the mouse in additional to control over the wireless communication module. In general, the power consumption of the operation mode is 14 mA. The controller turns off the wireless communication module in the idle mode, but still detects actions of mouse and buttons to return to the operation mode. In general, the power consumption of the idle mode is 5-7 mA. In the sleeping mode, the power consumption is 60-120 μA. In the deep sleeping mode, the controller not only turns off the wireless communication module but also does not detect actions of mouse and buttons. In general, the power consumption of the idle mode is 60-110 μA.
- Referring to FIG. 1A and FIG. 1B, a conventional power saving method is illustrated. When the wireless mouse is in the idle and sleeping modes, the controller detects actions of buttons. If buttons are activated, the wireless mouse returns to the operation mode from either idle or sleeping modes. The simple holding of the mouse does not render the wireless mouse entering into the operation mode.
- Referring to FIG. 1A, a conventional wireless mouse is in the operation mode in
step 104. Instep 106, the controller in the wireless mouse detects if it is not operated for 1 second. If it is “NO” instep 106, the wireless mouse enters into the idle mode instep 108. The controller checks, instep 110, if the activation of the wireless mouse is made within 5 seconds while in the idle mode. When it is not operated instep 110, the wireless mouse enters into the sleeping mode instep 112. Afterwards, instep 114, the controller checks user actions of the wireless mouse for 600 seconds. The conventional method proceeds to FIG. 1B when the wireless mouse is not operated instep 114. - Referring to FIG. 1B, the wireless mouse enters into the deep sleeping mode in
step 118 when it is “NO” instep 114. At this stage, the wireless mouse has not been not used for 10 minutes, e.g. in midnight or weekend when the wireless mouse has not been used for a long period of time. In the deep sleeping mode, the wireless mouse does not respond to the user operations. However, instep 120, the controller counts 680 ms, and then the wireless mouse enters into the idle mode instep 122. Afterwards, instep 124, the wireless mouse checks users operations for 320 ms. The wireless mouse returns to the operation mode instep 104 if it is “YES” instep 124, or returns to the deep sleeping mode instep 118 if it is “NO” instep 124. - The conventional power saving method, as shown in FIG. 1B, performs a loop consuming 1 second while the wireless mouse has not been used for a long period of time. The wireless mouse is in the deep sleeping mode for 680 ms to reduce power consumption and in the idle mode for 320 ms to detect mouse operations. The drawback for the conventional approach is that, when the wireless mouse is in the deep sleeping mode, the controller does not detect mouse operations until it enters into the idle mode. Furthermore, entering into the idle mode regularly consumes more power than the deep sleeping mode.
- As discussed above, the conventional power saving method cannot lower power consumption efficiently and cannot also respond to mouse operations immediately while in the deep sleeping mode. A demand for an improved power saving method with these features therefore exists.
- An aspect of the present invention is to provide a power saving method for a wireless mouse and a mouse with a power saving device.
- The present invention discloses a power saving device of a wireless mouse. The wireless mouse has a switch. When the wireless mouse is not in used for a period of time, an interrupt is actuated enabling the wireless mouse to enter into the sleep mode. When a user touches the mouse and actuates the switch, the interrupt is disabled and the wireless mouse returns to the operation mode. There are two methods to actuate the switch. One method is that a key extends out of the housing via an opening, and the switch is actuated when the key is depressed. The other is a cover disposed on the housing, and the switch is actuated when the cover is depressed
- FIG. 1A and FIG. 1B are flow diagrams showing a conventional power saving method of a wireless mouse.
- FIG. 2A and FIG. 2B are flow diagrams showing a power saving method of a wireless mouse in accordance an exemplary embodiment of the present invention.
- FIG. 3A is a wireless mouse in accordance with an exemplary embodiment of the present invention.
- FIG. 3B is a cross-sectional diagram of a wireless mouse in FIG. 3A.
- FIG. 3C is an explosive view of a wireless mouse in FIG. 3A.
- FIG. 4A is a wireless mouse in accordance with another exemplary embodiment of the present invention.
- FIG. 4B is a cross-sectional diagram of a wireless mouse in FIG. 4A.
- FIG. 4C is an explosive view of a wireless mouse in FIG. 4A.
- The present invention provides a power saving device for a wireless mouse. Such a wireless mouse consumes less power and, at the same time, is still sensitive to user operations while the wireless mouse is in the sleeping mode.
- Referring to FIG. 2A and FIG. 2B, an exemplary power saving method is shown in flow diagrams. The wireless mouse is in the operation mode of
step 204. When the wireless mouse is not activated for a period of time T1 instep 206, the mouse enters into idle mode instep 208. If the activation interval does not exceed T1, the wireless mouse stays in the operation mode instep 204. When the wireless mouse is in idle mode, a controller checks the wireless mouse instep 210. The wireless mouse returns to an operation mode instep 204 when it is operated instep 210. If it is “NO” instep 210, then step 212 is proceeded and an interrupt is enabled. After the interrupt is enabled, the wireless mouse enters into the sleeping mode instep 216. When a user utilizes the wireless mouse instep 218 and the interrupt is disabled instep 219, the wireless mouse returns to the operation mode instep 204. If the user does not utilize the wireless mouse instep 218, it stays in the sleeping mode instep 216. The length of T1 and T2 may be configured by the power saving method. For example, T1 may be 1 second and T2 may be 5 seconds. T1 maybe 2 seconds and T2 may be 10 seconds. - In the present invention, the wireless mouse enters into the sleeping mode entirely and consumes lowest power. The wireless mouse does not return to the operation mode until the interrupt is disabled. Therefore, the power saving method of the present invention can save more power than that in prior art.
- The present invention provides two exemplary embodiments of power saving device for achieving objects of the invention. The power saving device includes a switch coupling to the controller on a print circuit board in the wireless mouse. The switch may be an electronic switch or a leaf spring. When the wireless mouse is not in use for a period of time, it enters into the sleeping mode. When the user utilizes the wireless mouse, the switch is actuated to disable the interrupt, and the wireless mouse returns to the operation mode.
- Referring to FIG. 3A and FIG. 3B,
wireless mouse 300 is an exemplary embodiment of the present invention.Wireless mouse 300 includeshousing 304,wheel 330, andbuttons buttons wheel 330 depends on the wireless mouse design and is not restricted by the appearance in FIG. 3A. Cover 302 is disposed onhousing 304. FIG. 3B is a cross-sectional diagram ofwireless mouse 300. Cover 302 is coupled to switch 312, andprint circuit board 328 is disposed underswitch 312. When a user touchescover 302,cover 302 is depressed to actuateswitch 312. Consequently, the interrupt is disabled andwireless mouse 300 returns to the operation mode. - FIG. 3C is an explosive view of
wireless mouse 300.Housing 304 includes a plurality ofholes 332. Cover 302 is coupled to switch 312 by passing throughhole 332. Cover 302 returns to an undepressed position by resilience ofswitch 312 or by resilient units, such assprings Springs holes 332. Cover 302 haspositioning shafts 318, which corresponds topositioning holes 320 located onhousing 304. Whencover 302 andhousing 304 are assembled together, thepositioning shafts 318 are inserted into corresponding positioning holes 320, such thatcover 302 moves between depressed and undepressed positions. Cover 302 is undepressed while the wireless mouse is not in use and in the sleeping mode. Whilecover 302 is depressed, wireless mouse disables the interrupt and returns to the operation mode. The operation mode is not disturbed by the interrupt. The interrupt is actuated only ifwireless mouse 300 is not operated by a user for a period of time and enters into the sleeping mode. - FIG. 4A is another exemplary embodiment of the present invention. Components in
wireless mouse 400 are similar to those inwireless mouse 300. The major difference is key 412 replacingcover 302. The shape and position ofkey 412 varies according to the mouse design.Key 412 may be disposed on an upper side ofhousing 402 for operation convenience. FIG. 4B is a cross-sectional diagram ofwireless mouse 400.Key 412 is coupled to switch 414, andprint circuit board 424 is disposed underswitch 414. When a user touches key 412, key 412 is depressed to actuatedswitch 414. Consequently, the interrupt is disabled andwireless mouse 400 returns to the operation mode. - FIG. 4C is an explosive view of
wireless mouse 400.Key 412 returns to an undepressed position by resilience ofswitch 414 or by a resilient unit, such asspring 416.Key 412 is undepressed while the wireless mouse is not in use and in the sleeping mode. Whilekey 412 is depressed,wireless mouse 400 disables the interrupt and returns to the operation mode. The operation mode is not disturbed by the interrupt. The interrupt is actuated only ifwireless mouse 400 is not operated by a user for a period of time and enters into the sleeping mode. - While this invention has been described with reference to illustrative embodiments, this description is not intended to be construed in a limiting sense. Various modifications of the illustrative embodiments, as well as other embodiments of the invention, will be apparent to persons skilled in the art upon reference to this description. It is therefore contemplated that the appended claims will cover any such modifications or embodiments as falling within the true scope of the invention.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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TW91107833 | 2002-04-17 | ||
TW091107833A TW577012B (en) | 2002-04-17 | 2002-04-17 | Power saving device and method of wireless mouse |
Publications (1)
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US20030197683A1 true US20030197683A1 (en) | 2003-10-23 |
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ID=29213275
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Application Number | Title | Priority Date | Filing Date |
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US10/309,077 Abandoned US20030197683A1 (en) | 2002-04-17 | 2003-03-10 | Device and method for power saving of wireless mouse |
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TW (1) | TW577012B (en) |
Cited By (9)
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US20040152495A1 (en) * | 2003-02-04 | 2004-08-05 | Lg Electronics Inc. | Power-save system and method |
US20040192413A1 (en) * | 2003-03-31 | 2004-09-30 | Frank Edward H. | Wireless user input device providing host link indication |
US20050104853A1 (en) * | 2003-11-13 | 2005-05-19 | Chatree Sitalasai | Mechanical motion sensor and low-power trigger circuit |
US20050206618A1 (en) * | 2004-03-18 | 2005-09-22 | Darfon Electronics Corp. | Wireless mouse |
US20060114231A1 (en) * | 2004-11-12 | 2006-06-01 | Creative Technology Ltd. | Optical wireless mouse power saving feature |
US20080225004A1 (en) * | 2007-03-16 | 2008-09-18 | Hon Hai Precision Industry Co., Ltd. | Wireless mouse |
CN101872231A (en) * | 2010-06-04 | 2010-10-27 | 中颖电子有限公司 | Micro-control processing chip of built-in voltage converter and wireless mouse using same |
CN102495684A (en) * | 2011-12-08 | 2012-06-13 | 青岛海信信芯科技有限公司 | Remote control device and control method for same |
CN103914158A (en) * | 2013-01-04 | 2014-07-09 | 致伸科技股份有限公司 | Wheel rolling signal generation method |
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TW201303652A (en) * | 2011-07-13 | 2013-01-16 | Meng-Da Yang | Three-dimensional input sensing system |
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US20060114231A1 (en) * | 2004-11-12 | 2006-06-01 | Creative Technology Ltd. | Optical wireless mouse power saving feature |
US20080225004A1 (en) * | 2007-03-16 | 2008-09-18 | Hon Hai Precision Industry Co., Ltd. | Wireless mouse |
CN101872231A (en) * | 2010-06-04 | 2010-10-27 | 中颖电子有限公司 | Micro-control processing chip of built-in voltage converter and wireless mouse using same |
CN102495684A (en) * | 2011-12-08 | 2012-06-13 | 青岛海信信芯科技有限公司 | Remote control device and control method for same |
CN103914158A (en) * | 2013-01-04 | 2014-07-09 | 致伸科技股份有限公司 | Wheel rolling signal generation method |
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TW577012B (en) | 2004-02-21 |
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